Aquarium lab
Aquarium running-cost calculator
Estimate monthly electricity use for one piece of equipment.
- Result updates as you edit
- Units and limits shown
Starting scenario
- Power20W
- Hours per day10
- Price per kWh0.22
Result1.32per month
Aquarium inputs
Calculation workbench
Adjust the inputs. The result updates immediately, with the calculation method explained below.
Calculation logic
What it calculates
Formula
Watts × hours per day × 30 ÷ 1,000 × price per kWh.
Limits
Thermostatic equipment does not draw its full rating for every connected hour.
Next step
Measure a heater over several representative days and use its actual average duty cycle.